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Finding the Fourth Proportional to 628,506,901.20, 942,760,351.80 and 628,506,901.20

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Solution

The fourth proportional to 628,506,901.20, 942,760,351.80 and 628,506,901.20 is: 942,760,351.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,506,901.20 : 942,760,351.80 = 628,506,901.20 : x
  2. Step 2: Convert to fraction form
    628,506,901.20/942,760,351.80 = 628,506,901.20/x
  3. Step 3: Cross multiply
    628,506,901.20x = 942,760,351.80 × 628,506,901.20
  4. Step 4: Simplify right side
    628,506,901.20x = 592,531,387,284,039,808
  5. Step 5: Solve for x
    x = 592,531,387,284,039,808/628,506,901.20
  6. Step 6: Final answer
    x = 942,760,351.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.